<template>
<div>
	<div class="search">
		<input v-model="keyword" class="search-input" type='text' placeholder='输入城市名或拼音'/>
	</div>
	<div class="search-content" ref="search" v-show='keyword'>
	<ul>
		<li class="search-item border-bottom" 
		v-for="item of list" :key="item.id" @click="handleCityClick(item.name)">{{item.name}}</li>
		<li class="search-item border-bottom" v-show="hasNoData ">没有找到匹配数据</li>
	</ul>
	</div>
</div>
</template>

<script>
import Bscroll from 'better-scroll'
import {mapMutations} from 'vuex'
export default{
	name:'CitySearch',
	props: {
		cities:Object
	},
	data () {
		return {
			keyword:'',
			list:[],
			timer:null
		}
		
	},
	methods :{
		handleCityClick (city){
			// this.$store.commit('changeCity',city)
			this.changeCity(city)
			//页面跳转
			this.$router.push('/')
		},
		...mapMutations(['changeCity'])
	},
	computed :{
		hasNoData () {
			return !this.list.length
		}
	},
	watch: {
		keyword () {
			if(this.timer){
				clearTimeout(this.timer)
			}
			if(!this.keyword){
				this.list=[]
				return
			}
			this.timer=setTimeout(()=>{
				const result=[]
				for (let i in this.cities) {
					//从数据中循环找值看是否拼音或名字的前缀与搜索的关键词一致
					this.cities[i].forEach((value)=>{
						if(value.spell.indexOf(this.keyword)>-1||
						value.name.indexOf(this.keyword)>-1){
							result.push(value)
						}
					})
				}
				this.list=result
			},100)
		}
	},
	mounted () {
		//让下面列表可以滚动，后面的click：true相关内容是解决移动端不能点击问题
		this.scroll =new Bscroll(this.$refs.search,{click:true,tap:true})
	}
}
</script>
<style lang="stylus" scoped>
	@import '~styles/varibles.styl'
	.search
		height: .72rem
		padding: 0 .1rem
		background-color:$bgcolor
		.search-input
			box-sizing: border-box
			width: 100%
			height: .62rem
			padding:0 .1rem
			line-height: .62rem
			text-align: center
			border-radius: .06rem
			color: #666
	.search-content
		z-index:1
		overflow: hidden
		position: absolute
		top: 1.58rem
		left: 0
		right: 0
		bottom: 0
		background:#eee
		.search-item
			line-height: .62rem
			padding-left: .2rem
			background-color:#fff
			color: #666
			
</style>
